TWI435823B - Shock absorber structure - Google Patents

Description

Suspension structure

The present invention relates to a suspension structure, and more particularly to a suspension structure suitable for a land vehicle carrier.

Due to the advancement of industrial technology, various types of vehicle vehicles have become more sophisticated, and their fuel economy, horsepower and speed are changing with each passing day. Therefore, a reliable and effective braking system can be easily improved in speed. While enjoying the thrill and convenience of speed, it is an important guarantee to reduce traffic accidents. Because of its small size and high mobility, locomotives have become an important means of transportation in daily life.

At present, the general locomotive is equipped with a shock absorber between the frame and the wheel assembly (front or rear wheel), so as to alleviate the impact of the vehicle when the road is bumpy, thereby improving the comfort during driving and effectively improving the car or The service life of the locomotive. The general shock absorber mainly comprises a cylinder body, which accommodates high-viscosity damping oil and slides with a piston. One end of the cylinder body is provided with a connecting rod, and one end of the connecting rod is fixed to the wheel assembly. One part (for example, a wheel frame), and the other end fixes the piston in the barrel and is sleeved with a spring. When the vehicle is braked, the vehicle body can compress the damping oil with a piston via a connecting rod to obtain a buffer.

The conventional shock absorber is provided with one end connected to the wheel assembly and connected in an upwardly extending manner (ie, along the height direction of the vehicle) to the other end of the frame, usually presenting as a shock absorber located on the seat cushion and the wheel. The configuration of the room. Such a configuration has a rather adverse effect on safety, stability, and durability, and is still not ideal in overcoming the vehicle's ability to vibrate, often resulting in reduced ride comfort.

The main object of the present invention is to provide a suspension structure which can improve the safety, stability and durability of the suspension device.

In order to achieve the above object, the suspension structure of the present invention comprises a main frame body, a power unit, a wheel assembly and a shock absorber. The power unit is swingably suspended from the main frame, and the suspended position defines a pivot axis parallel to one of the vehicle width directions.

The wheel assembly is coupled to the aforementioned power unit for being driven by it. The shock absorber is connected between the main frame body and the power unit in a direction parallel to the longitudinal direction of the vehicle and the ground direction.

With the above structural design, when the vehicle encounters uneven ground during the traveling, the power unit swings in the approximate front-rear direction with respect to the suspension frame, and the shock absorber disposed along the length of the vehicle also acts as the buffer in the same direction. efficacy. That is to say, the shocking and the back-and-forth swinging motion of the power unit provides a comfortable and safe riding experience. In addition, the safety, stability and durability of the suspension device are also improved.

The suspension structure of the present invention can be applied to two-wheel, three-wheel or even four-wheel vehicles, and the power type can be electric type, conventional internal combustion engine type, or hybrid electric type. The wheel assembly may be a rear wheel assembly or a front wheel assembly.

The power unit may include a motor power box and a gearbox coupled to the motor power box, and the shock absorber is coupled to the motor power box. The aforementioned gearbox may be a stepless gearbox, such as a belt gearbox, or may be a gearbox having a particular number of gears.

The main frame body may include a chassis, a front frame extending forward and backward from the chassis, and a rear frame, wherein the chassis includes a gap, and the shock absorber is stored in the gap.

1 to 3, respectively, a perspective view, a partially enlarged view, and a partial top view of a vehicle having a suspension structure according to an embodiment. The figure shows a three-wheeled vehicle with two front wheels and one rear wheel. The car body portion has been removed for a clear view of the internal structure. In this example, the vehicle is a three-wheel electric vehicle using a motor as a power source.

The vehicle includes a main frame body 10, a left front wheel assembly 11, a right front wheel assembly 12, a rear wheel assembly 13, a battery compartment 16, a power unit 17, a steering unit 20, and a shock absorber 30.

The main frame body 10 includes a bottom frame 101, a left side frame 102, a right side frame 103, a front frame 104 and a rear frame 105. Each of the above is formed by connecting a plurality of pipe members, wherein the front frame 104 and the rear The frame 105 extends obliquely forward and backward from the chassis 101 and in the vehicle height direction H, and both the left frame 102 and the right frame 105 extend upward from the chassis. The left side frame 102 and the right side frame 105 are separately connected to the rear frame 105.

The steering unit 20 is rotatably mounted to the front frame 104 and simultaneously coupled to the left front wheel assembly 11 and the right front wheel assembly 12, thereby controlling the change in direction of the two front wheel assemblies 11, 12. The battery case 16 is fixedly carried on the chassis 101.

The power unit 17 includes a motor power box 14 and a gearbox 15, wherein the motor power box 14 is first suspended from a suspension frame 21 of the rear frame 105, and the suspension frame 21 is further fixed to the rear frame 105, for example, by locking. It. Therefore, the power unit 17 can be swung back and forth with respect to the main frame body 10 (the suspension position defines a pivot axis X whose pivot axis X is substantially parallel to the vehicle width direction W).

The battery compartment 16 is electrically coupled to the motor power box 14 to supply the power required to operate its internal motor. The gearbox 15 is coupled to the rear wheel assembly 13 on the one hand and to the motor power box 14 on the other hand to transfer motor power to the rear wheel assembly 13. In this example, the transmission 15 is a stepless transmission, that is, a transmission function that provides stepless shifting, for example, including a belt type stepless shifting mechanism.

The shock absorber 30 is a spring piston type shock absorber commonly used in a general locomotive, and has a front end 301 connected to the chassis 101 and a rear end 302 connected to the motor power box 14 of the power unit 17. Further, in particular, the shock absorber 30 is extended in the vehicle length direction L (and the ground direction). The shock absorber 30 can be cleverly disposed in the gap 101a of the chassis 101 for collection purposes.

With the above structural design, when the vehicle encounters an uneven ground during traveling, the arc-shaped oscillating trajectory of the power unit 17 with respect to the suspension frame 21 is actually approximated to the front and rear swings under the condition of a small swing amount, and is simultaneously disposed along the vehicle length direction L. The shock absorber 30 also plays the same buffer damping effect. That is to say, the shocking movement of the power unit 17 by the repetition of the power unit 17 provides a comfortable and safe riding experience.

It can be seen from the above that the present invention provides a shock-absorbing structure which is different from the conventional design, not only can improve the shock-absorbing effect of the vehicle, but also makes the vehicle body more stable and simple, and the structure has the advantages of convenient parts configuration and assembly. It also contributes to the durability of the part.

Although the present invention is described by taking a three-wheeled vehicle as an example, the suspension structure of the present invention can of course be applied to other types of vehicles, such as a two-wheeled vehicle such as a two-wheeled vehicle or an ATV. In addition, the gearbox is not limited to a stepless gearbox, but may also be a gearbox that provides a certain number of gear positions. Further, the suspension structure of the present invention is not limited to use in an electric vehicle, and other power types such as a conventional internal combustion engine vehicle or a hybrid electric vehicle are applicable.

The above-mentioned embodiments are merely examples for convenience of description, and the scope of the claims is intended to be limited to the above embodiments.

10. . . Main frame

101. . . Chassis

102. . . Left frame

103. . . Right side frame

104. . . Front frame

105. . . Rear frame

11. . . Left front wheel assembly

12. . . Right front wheel assembly

13. . . Rear wheel assembly

14. . . Motor power box

15. . . Gearbox

16. . . Battery case

17. . . Power unit

20. . . Steering unit

twenty one. . . Suspension

30. . . Shock Absorbers

301. . . front end

302. . . rear end

101a. . . Void

W. . . Car width direction

H. . . Car height direction

L. . . Head direction

X. . . Pivot axis

1 is a perspective view of a vehicle having a suspension structure according to a preferred embodiment of the present invention.

Figure 2 is a partial enlarged view of Figure 1.

Figure 3 is a partial top view of Figure 1.

101. . . Chassis

102. . . Left frame

103. . . Right side frame

105. . . Rear frame

13. . . Rear wheel assembly

14. . . Motor power box

15. . . Gearbox

twenty one. . . Suspension

30. . . Shock Absorbers

L. . . Head direction

H. . . Car height direction

Claims (6)

The utility model relates to a suspension structure, which is suitable for a vehicle, comprising: a main frame body; a power unit pivotably suspended from a suspension frame of the main frame body, the suspension position defining one of parallel to a vehicle width direction a pivoting axis; a wheel assembly coupled to the power unit for being driven; and a shock absorber extending between the main frame body and the power unit in a direction parallel to a vehicle length and a ground direction. The suspension structure of claim 1, wherein the wheel is always a rear wheel assembly. The suspension structure according to claim 1, wherein the vehicle is a three-wheel electric vehicle. The suspension structure of claim 1, wherein the power unit comprises a motor power box and a gearbox coupled to the motor power box, the shock absorber being coupled to the motor power box. The shock absorber structure of claim 4, wherein the gearbox is a stepless gearbox. The suspension structure of claim 4, wherein the main frame body comprises a chassis, a front frame extending forward and backward from the chassis, and a rear frame, the chassis comprising a gap. The shock absorber is located in the gap.